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Title: Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals

Abstract

Here, SAPO-34 is widely used as a catalyst for important industrial reactions, such as the methanol-to-olefin (MTO) reaction and selective catalytic reduction (SCR) of nitrogen oxides (NO x). The internal structure of SAPO-34 has a great influence on the catalytic performance. Two-dimensional (2D) images of the SAPO-34 particle surfaces from scanning electron microscopy (SEM) show clearly well-faceted cube morphologies, which suggest they should be quite uniform perfect crystals. However, Bragg coherent X-ray diffraction imaging (BCDI) of the SAPO-34 particles shows a rich internal structure existing within these crystals. In this work, we investigated the internal structure of a SAPO-34 zeolite by serial block-face scanning electron microscopy (SBFSEM). The internal structure observed in the backscattered electron (BSE) micrographs from SBFSEM and the energy dispersive spectroscopy (EDS) measurements is found to be consistent with the BCDI results. From the three-dimensional (3D) structural images of SAPO-34 crystals obtained by SBFSEM, the domains within the individual SAPO-34 were visualized and quantified.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [1];  [3]; ORCiD logo [4]
  1. Tongji Univ., Shanghai (China)
  2. Tongji Univ., Shanghai (China); Univ. College London, London (United Kingdom)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Tongji Univ., Shanghai (China); Univ. College London, London (United Kingdom); Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1475077
Alternate Identifier(s):
OSTI ID: 1477480
Report Number(s):
BNL-209157-2018-JAAM
Journal ID: ISSN 2046-2069; RSCACL
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 8; Journal Issue: 59; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Bai, Xue, Chen, Bo, Yang, Fei, Liu, Xianping, Silva-Nunes, Daniel, and Robinson, Ian. Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals. United States: N. p., 2018. Web. doi:10.1039/C8RA05918G.
Bai, Xue, Chen, Bo, Yang, Fei, Liu, Xianping, Silva-Nunes, Daniel, & Robinson, Ian. Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals. United States. doi:10.1039/C8RA05918G.
Bai, Xue, Chen, Bo, Yang, Fei, Liu, Xianping, Silva-Nunes, Daniel, and Robinson, Ian. Mon . "Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals". United States. doi:10.1039/C8RA05918G.
@article{osti_1475077,
title = {Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals},
author = {Bai, Xue and Chen, Bo and Yang, Fei and Liu, Xianping and Silva-Nunes, Daniel and Robinson, Ian},
abstractNote = {Here, SAPO-34 is widely used as a catalyst for important industrial reactions, such as the methanol-to-olefin (MTO) reaction and selective catalytic reduction (SCR) of nitrogen oxides (NOx). The internal structure of SAPO-34 has a great influence on the catalytic performance. Two-dimensional (2D) images of the SAPO-34 particle surfaces from scanning electron microscopy (SEM) show clearly well-faceted cube morphologies, which suggest they should be quite uniform perfect crystals. However, Bragg coherent X-ray diffraction imaging (BCDI) of the SAPO-34 particles shows a rich internal structure existing within these crystals. In this work, we investigated the internal structure of a SAPO-34 zeolite by serial block-face scanning electron microscopy (SBFSEM). The internal structure observed in the backscattered electron (BSE) micrographs from SBFSEM and the energy dispersive spectroscopy (EDS) measurements is found to be consistent with the BCDI results. From the three-dimensional (3D) structural images of SAPO-34 crystals obtained by SBFSEM, the domains within the individual SAPO-34 were visualized and quantified.},
doi = {10.1039/C8RA05918G},
journal = {RSC Advances},
number = 59,
volume = 8,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1039/C8RA05918G

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